Coke-oven door.



PATENTED MAR. 17, 1908. J. J; ALLEY.

00KB OVEN DOOR; APPLICATION FILED JUNE 1, 1ao7.

WM 16? 4 I 171 j my; i /16 By I '1,

A TTOR/VE VS JOHN J. ALLEY, OF BRISTOL, VIRGINIA.

COKE-OVEN DOOR.

Specification of Letters Patent.

Patented Mai-ch17, 1908.

Application filed June 1, 1907. Serial No. 378,767.

To all whom it may concern:

Be it known that I, JOHN J. ALLEY, a citizen of the United States, residing at Bristol,

in the county of Washington and State of- Y and other laces where the heat generated is hive type.

Virginia, have invented a new and useful Coke-Oven Door, of which the following-is a specification.

, This invention has reference to improvements in coke oven doors, although'such doors may also be used for furnaces, kilns,

too great or all-metal doors to give reasonable durability. and service. u

.The object of thepresent invention is to provide a.door structure wherein the parts directly exposed to the action of the fire are made of some refractory material, such as fire brick, either in one piece or in several ieces, while the supporting structure for the e brick part'of t e door maybe made of metal butso located and constructed as to. be protected from the injurious eflects of the heat. I

The invention is designed more particularly for use with coke ovens of the bee- Such ovens are quite large, with a circular fiat bottom about twelve to -fourteen.feet in diameter and extending u in a cone-shape and must be pul leveled down to an even depth over the ward toa height of about seven or eig t feet. Through the top 0 ning of such an oven there isintro'duced t e char e of slack, -fr

amounting to five or six tons. T 's piles u ed an entire bottom, which it covers about fifteen to thirtyinches deep. In order to get to this slack to level it the door must be made in two sections, an upper section'and a lowersection; The lower section, usually covering about one-third to one half of the opening,

I inust be closed before the charge goes in, but

the upper section is left openso that the v chargemay beleveled, after which the upper section is closed. Forthis reason the two sections. are arranged .to be opened and closed independentl of each other. When the charge is burned the heat becomes quite intense, coming almost to a white heat, which would quicklydeatroy a metal door or the parts of thtjsame which are exposed. It is customs in practice to'simply close up this;

opening in the oven by means of fire ,built into place and covered or plastered- (gerthe entire outside to make it air-tight. is

. to four feet wide and high.

is time the oven is charged and must be pulled down each time it is desired to draw the coke from the oven. Since this process must be re eated over and over there is great waste 0 labor and material. This will be more readily seen when it is considered that these doors are The invention consists essentiall door the fire side of which is ma e of a single fire brick or which is made up of. with a metal -frame or' the other side-of the of a' from three exposing any of the metal parts to the 'fire or to the severe heat from the inside of the oven.

The invention will be fully understood .from the following detailed description,

taken in connection with the acoom anying drawin s forming. part of this spec' cation,

Figure Lis a face view of the two doorsec- 'tions comprising the complete door, with the means for supportin' the same; Fig. 2 is a cross section on the me z xof Figl 1; and Figs. 3 and4 are detail sections of the means for holding the fire brick to the supporting 8.1118. Referring to the drawings, there is shown a small portion of a coke oven 1 which may be considered as of the beehive type but no attempt has been made to show the relative dimensions of this even with relation to the to the interior. thereof or the passagewa' doors for c osing said passageway. I

The 'im roved door is composed ',of two parts 2 and 3,'the part 2 constituting the upper section of the door and the part 3 constituting the lower section-thereof. Referrin first to the part 2,- thebo'dy of this part is ormedpofa single fire brick 4, or several fire bricks suitabl joined together, and entirepart 2 is s sped in conformity with the opening-to be c osed thereby. Secured to the .side of the-section 2 remote from the side exposed to the fire or"heat is a spider composed of'aicentral portion or hub 5 and four, radial arms 6.] This s ider is spaced away from the bed 4 at iso ated points by a central spacing hi lines-at 7, and by end enlargements 8, best ock, indicated 111 dottedho'wn in 8.- These enlargements may; 1 30 the brick 4, an

ofcourse, be-made separate from the arms 6 or they may be cast in one piece therewith as indicated in Fig. 3. Extending centrally through the hub 5'is a bolt 9', and extending throu h each enlargement 8 and the corresponding end of the arm 6 is another bolt 10, best shown inFig, 3. The heads of 'all the 'bolts are countersunk into the fire side of the fire. brick 4 and they may be further proteetedb a filling 11 of cement or fire clay.

' In-or er that there may be free circulation of air around the metallic spiderthe arms 6 do not extend uite to the outer corners of in order to support these corners they may be engaged by dogs 12 each having a tooth '13 entering an under- V out recess 14 in the cornerlof the fire brick.

The dogs are held to the enlargements 8 by suitable bolts 15. The dogs 12' are particularly useful for holding the corners of the 17 at each end of an arm 6, and-this bracket. is so shakped as to bear against the extreme the brick 4 adj ac'ent to each arm 6. The bracket 17 is formed with a slot 18-- through Which asses the bolt 10 before referred to, .where yzthe bracket may be easily ad kisted to the'corner of the brick.

' he-lower section of the door they be made i of a single piece of fire brick 19, or of several ieces o firebrick suitably joined, and on the ace remote from the fire side'ofthe brick the latter may be made with a dovetail offset 20, less in area than the outside face of the door section 3.. In such structure the su porting frame is somewhat difier'entl shape than in the structure shown with re ation to the upper door section. The .hub 5; is provided with arms 6 p'ro-jectin in diametrically opposits directions there em and withshorter arms 21 radial thereto. The hub 5 has also a side offset 22 terminating in a flange 23. 'The'arms 6 and 21 carry a U-shaped frame composed of a bottom bar 24, earned by the arms 21, and side bars 25, carried by the arms 6. If desirable, the spider and bars 24- and 25 may all be cast in one-piece.- The inner ed es of the bars 24 and 25 arev suitably, to engage under the dovetail ofiset 205 The top of the oflset120 is engaged by a shape .bar- 26, also suitably shaped to engage the dovetail portion of the ofi'set, and this bar is bolts 31 serve to connect the bars-2 5 and 26.

- prrovided with end lugs' 27 and a central ame 28 terminating in a flange29 opposing the flange 23 on the extension 22 of the hub f 5. The ends of the bars 25 contiguous tothe bar 26 are also'provided with flanges 30, .and

through the flanges 27 and 30, while a bolt 32 connects the extension 22 of the-hub 5 and the bracket 28 through-tne flanges 23 and 29. There is-thus pro vided'means whereby the dovetail offset 20 of the fire brick 19 is bars 25 by spacing blocks 33, and the hub 5 I is spaced away from near the center of the fire brick 19 by a spacing block 34, while a bolt 35, passing through the hub 5 and spacing block 34 andhaving its head countersunk in the fire brick section 19, serves to hold the supporting spider 5-6 to the center or near the center of the door section 3. A fillin or luting of fire clay or cement, indicate at 36, is provided to protect thehead of the bolt 35. I

Either door section may beprovided with either type of supporting means for the fire brick, but I prefer to use the spider, shown with relation to the upper door section 2,

since the up er edge of the upper door section is large y arch-shaped and the square retaining structure shown with relation to the lower door section 3'would not then apply so readily.

It may be noted that while the-supporting structure shown with relation to thelower door section 3 is so close to the edges of the fire brick 19 as to avdidgthe use of the dogs 12 or bracket 17, there is still a small space left between the outer edges of the frame composed of the parts 24, 25 and 26 and the walls of the openin the door sections are designed to close. lation of air and these metallic parts are thereforekept comparatively cool.

Each hub 5 is provided with oppositelyarranged arc-shaped slots 37 through which extend bolts 38 passing through care 39 formed on shortarms 40, the outer ends of which are bifurcated to receive the ends of pivoted arms 41, the other ends of. which are mounted to turn upon an upright rod 42,

whichlatter is fast brackets43 secured to the outer' face of the oven. The arms 41' are supported atIthe proper hei hi; on the rod 42 by clam s 44 held in place. y set-screws 45.-

It wil be seen that each door section 2 and 3 is independently movable around the rod 42 as an axis, so that'each may be swung oneside' away from interference wit workmen. The slots37 permit'the adjustment of the doorsections to a true horizontal position or at any anglewithina limited range about a horizontal axis with "relation to the horizontal plane of swing of the door, so that the door sections may be easily. adjusted to fit the opening to the interior of the coke oven.

T is will permit the cireu-- iiito placeor swung out of the op'em'n and-to i ceases tions thereof these sections are prevented from buckling under the heat to which they are subjected. v V i 'It will be seen that the pivoted door sections may be readily swung out of the way when it 1s desired to remove the coke from the oven, and that when the oven is to be filled with a fresh charge the lower door section' may be swung into place, thus leaving ample room above the same for workmen to distribute and level the charge of slack dumped into the oven through the top thereof. a

It will'also-be seen that the frame composed of the parts24, and 26 is adjustable in size, so that fire bricks 19 of different height may be readily held by the same frame.

While the spiders are shown as having four arms, there may be as many :arms as desired and as many fastening bolts may be used as may be found necessary, depending on the size and weight of the door section.

. The supportcomp'osed of the arms 40 and 41 permits the door sections to be moved strai ht into the opening in the coke oven, and t s is uite necessary slnce the door sections shoul fit reasonabl well into the 0 env 1 ing and the door is usua ly set in from ourteen to twenty-four inches from the outside, whilethe opening is the same width throughout. This form of hinge or support also permits the door to be swung wit its hot side away from workmen who are engaged in withdrawing the coke from the oven. While I have described the door as comosed of two separately movable sections, it

is, of course, possible to construct the door 111 the manner herein described in one section, and such a door would be particularlv adaptedto furnaces or kilns or other such structures where the door 'is subjected to great heat.

Under some circumstances it is advisable nearly the full slze of'the fire brick sections. Although I have described the door as made of two sections, or, in the case of small doors, of one section only, it is more feasible with large sized coke oven doorsto make the upper and lower sections of two sub-sections each and swing the upper and lower righthand sub-sections t0 the right-hand side of the opening and the up )er. and lower lefthand sub-sections to the oft-hand side of the opening. This would mean sim ly a duplication of the structure shown in ig. 1 to the right the doors there shown, with the single exception that the upper door sections would be made to conform to the larger arch open- 1. A coke oven door comprising a body of refractory material, and a metallic spider support therefor having arms extending from a central point and secured at the ends at isolated oints on the cool side of the door and space( therefrom for the circulation of air between the metallic support and the refractory material.

2. A-coke oven door comprising a body of refractory material constituting the fire side of the door, and a metallic spider support therefor on the cool side of the door, said support having arms radiating from a central point and at their ends connected to the refractory material near the outer edges thereof and also connected to the refractor material at the central oint', said spider eing spaced from the reffactory material to permit the circulation of air between the latter and the metallic support.

3. A coke oven door comprisin a refractory fire surface, a supporting spi er secured at isolated points thereto and spaced therefrom, said spider having oppositely arranged arcshaped slots at the central portion, and a hinged support for the door connected to said spic er through the arc-shaped slots.

4. A coke oven door comprising a refractory fire surface, a supporting spider secured at isolated points thereto and spaced therefrom, and a hinged support for the door to which the latter is connected so as to be adjusted in a plane at right angles to the plane throu h which the door is swung on its hinge.

5. coke oven door com )risin a face of refractory material for the fire slde of the 'door, a sup )ort for said casing attached to the cool sid near the edges of the door and also at an ir'1-.

termediate point and spaced from said re-- e of the door at isolated points M i 

